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From Jonathan Ellis <>
Subject Re: Data loss and corruption
Date Wed, 09 Jun 2010 15:16:52 GMT
Evan was just doing a ritual CYA and saying "this is new technology"
[about a year ago].

On Tue, Jun 8, 2010 at 10:45 PM, Hector Urroz <> wrote:
> Hi all,
> We're starting to prototype Cassandra for use in a production system and
> became concerned about data corruption after reading the excellent article:
> where Evan Weaver writes:
> "Cassandra is an alpha product and could, theoretically, lose your data. In
> particular, if you change the schema specified in the storage-conf.xml file,
> you must follow these instructions carefully, or corruption will occur (this
> is going to be fixed). Also, the on-disk storage format is subject to
> change, making upgrading a bit difficult."
> Is database corruption a well-known or common problem with Cassandra? What
> sources of information would you recommend to help devise a strategy to
> minimize corruption risk, and to detect and recover when corruption does
> occur?
> Thanks,
> Hector Urroz

Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support

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